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11 API jobs in Harwell, Didcot + 20 miles
338 exact matches jobs are outside your preferred location
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We have an exciting opportunity for a Senior Salesforce Administrator / Developer(Technical Specialist) at NPL. The focus for this role is to lead on the design, development, and support of the platform. Youll be joining the Enterprise Systems team. Salesforce is becoming a crucial business tool within NPL and we require a Snr Salesforce Administrator/Developer(Technical Specialist) to support the adoption within the business. The person will be required to collaborate withkey stakeholders in the organisation, including Sales, Marketing, Commercial Excellence,business analysts,project managersand end-users to gather and analyse their business needs and requirements, and to consequently drive the development of the Salesforce platform in response to those needs to meet strategic objectives. This role will be looked upon to execute and lead on technical implementations
We have an exciting opportunity for a Senior Salesforce Administrator / Developer(Technical Specialist) at NPL. The focus for this role is to lead on the design, development, and support of the platform. Youll be joining the Enterprise Systems team. Salesforce is becoming a crucial business tool within NPL and we require a Snr Salesforce Administrator/Developer(Technical Specialist) to support the adoption within the business. The person will be required to collaborate withkey stakeholders in the organisation, including Sales, Marketing, Commercial Excellence,business analysts,project managersand end-users to gather and analyse their business needs and requirements, and to consequently drive the development of the Salesforce platform in response to those needs to meet strategic objectives. This role will be looked upon to execute and lead on technical implementations
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Job Role:Senior Full-Stack PHP Developer - Working Hours:5 days per week - Job Type:Permanent - Salary:£70,000 - £85,000 depending on experience - Location:London - Remote: 4 days remote - 1 day on-site in London office - Postcode NW6 - About the Company - Our client is a rapidly growing platform that connects individuals with industry professionals for special events. By offering unique opportunities, the platform allows professionals in the field to achieve higher earnings while enjoying enhanced flexibility and a better work-life balance. Role Overview - This is an exciting opportunity to join a high-growth, early-stage startup. As a Full-Stack Developer, youll work closely with the founders and engineers in a tight-knit, London-based team. Youll have a direct impact on the companys expansion into new international markets, shaping the future of the business.
Job Role:Senior Full-Stack PHP Developer - Working Hours:5 days per week - Job Type:Permanent - Salary:£70,000 - £85,000 depending on experience - Location:London - Remote: 4 days remote - 1 day on-site in London office - Postcode NW6 - About the Company - Our client is a rapidly growing platform that connects individuals with industry professionals for special events. By offering unique opportunities, the platform allows professionals in the field to achieve higher earnings while enjoying enhanced flexibility and a better work-life balance. Role Overview - This is an exciting opportunity to join a high-growth, early-stage startup. As a Full-Stack Developer, youll work closely with the founders and engineers in a tight-knit, London-based team. Youll have a direct impact on the companys expansion into new international markets, shaping the future of the business.
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Are you an experienced Salesforce Architect, looking to take on a challenging role, at a global, 500+ staff strong UK based Software product company? You’ll be keen to take on a key role within the Data Ops team & own all things Salesforce related, across the technical, data & stakeholder management piece. Working across the business in this highly visible role, not only is Salesforce used extensively, internally, but they are also major Salesforce partners & are embedded into the Salesforce Ecosystem. Mainly, you should be a technical expert in Salesforce but also have the functional soft skills to make sure that the architecture & business requirements are effectively translated into reality. Role title: Salesforce Architect. Senior Salesforce Developer. Location: Central London – but largely irrelevant as this role is 98% remote.
Are you an experienced Salesforce Architect, looking to take on a challenging role, at a global, 500+ staff strong UK based Software product company? You’ll be keen to take on a key role within the Data Ops team & own all things Salesforce related, across the technical, data & stakeholder management piece. Working across the business in this highly visible role, not only is Salesforce used extensively, internally, but they are also major Salesforce partners & are embedded into the Salesforce Ecosystem. Mainly, you should be a technical expert in Salesforce but also have the functional soft skills to make sure that the architecture & business requirements are effectively translated into reality. Role title: Salesforce Architect. Senior Salesforce Developer. Location: Central London – but largely irrelevant as this role is 98% remote.
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Are you an experienced Salesforce Architect, looking to take on a challenging role, at a global, 500+ staff strong UK based Software product company? You’ll be keen to take on a key role within the Data Ops team & own all things Salesforce related, across the technical, data & stakeholder management piece. Working across the business in this highly visible role, not only is Salesforce used extensively, internally, but they are also major Salesforce partners & are embedded into the Salesforce Ecosystem. Mainly, you should be a technical expert in Salesforce but also have the functional soft skills to make sure that the architecture & business requirements are effectively translated into reality. Role title: Salesforce Architect. Senior Salesforce Developer. Location: Central London – but largely irrelevant as this role is 98% remote.
Are you an experienced Salesforce Architect, looking to take on a challenging role, at a global, 500+ staff strong UK based Software product company? You’ll be keen to take on a key role within the Data Ops team & own all things Salesforce related, across the technical, data & stakeholder management piece. Working across the business in this highly visible role, not only is Salesforce used extensively, internally, but they are also major Salesforce partners & are embedded into the Salesforce Ecosystem. Mainly, you should be a technical expert in Salesforce but also have the functional soft skills to make sure that the architecture & business requirements are effectively translated into reality. Role title: Salesforce Architect. Senior Salesforce Developer. Location: Central London – but largely irrelevant as this role is 98% remote.
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Full Stack Developer Node.Js / React
Full Stack Developer Node.Js / React
Halian Technology Limited
W1, Central London
From £60,000 to £65,000 per annum Plus bonus and benefits
My client specialises in digital payments across the UK and Europe. Their platform enables seamless real-time transactions for consumers and businesses, with a focus on security, scalability, and user experience. Backed by top-tier investors and used by thousands daily, were scaling up and looking for passionate engineers to help us build the future of payments. We are seeking a talented and driven Mid-Level Full Stack Engineer with strong skills in Node.js, React, and AWS cloud infrastructure. Youll play a key role in designing, developing, and maintaining scalable microservices and user interfaces for our core payments platform. Youll work in a cross-functional agile team alongside product managers, designers, and fellow engineers to deliver features that directly impact our customers and partners. * Develop backend microservices using Node.js (Express/Nest.js prefe
My client specialises in digital payments across the UK and Europe. Their platform enables seamless real-time transactions for consumers and businesses, with a focus on security, scalability, and user experience. Backed by top-tier investors and used by thousands daily, were scaling up and looking for passionate engineers to help us build the future of payments. We are seeking a talented and driven Mid-Level Full Stack Engineer with strong skills in Node.js, React, and AWS cloud infrastructure. Youll play a key role in designing, developing, and maintaining scalable microservices and user interfaces for our core payments platform. Youll work in a cross-functional agile team alongside product managers, designers, and fellow engineers to deliver features that directly impact our customers and partners. * Develop backend microservices using Node.js (Express/Nest.js prefe
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Job Role: Senior Full-Stack PHP Developer - Working Hours: 5 days per week - Job Type: Permanent - Salary: £70,000 - £85,000 depending on experience - Location: London - Remote: 4 days remote - 1 day on-site in London office - Postcode NW6 - About the Company - Our client is a rapidly growing platform that connects individuals with industry professionals for special events. By offering unique opportunities, the platform allows professionals in the field to achieve higher earnings while enjoying enhanced flexibility and a better work-life balance. Role Overview - This is an exciting opportunity to join a high-growth, early-stage startup. As a Full-Stack Developer, youll work closely with the founders and engineers in a tight-knit, London-based team. Youll have a direct impact on the companys expansion into new international markets, shaping the future of the business.
Job Role: Senior Full-Stack PHP Developer - Working Hours: 5 days per week - Job Type: Permanent - Salary: £70,000 - £85,000 depending on experience - Location: London - Remote: 4 days remote - 1 day on-site in London office - Postcode NW6 - About the Company - Our client is a rapidly growing platform that connects individuals with industry professionals for special events. By offering unique opportunities, the platform allows professionals in the field to achieve higher earnings while enjoying enhanced flexibility and a better work-life balance. Role Overview - This is an exciting opportunity to join a high-growth, early-stage startup. As a Full-Stack Developer, youll work closely with the founders and engineers in a tight-knit, London-based team. Youll have a direct impact on the companys expansion into new international markets, shaping the future of the business.
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Trafalgar Talent is recruiting for a progressive, subscription-based tech company thats enhancing how users interact with web platforms through secure, high-performance solutions. As a Senior React Developer, you'll be pivotal in architecting, building, and optimizing advanced web applications using React and TypeScript. You'll take on complex engineering challenges, influence architectural decisions, and contribute directly to the user experience. * Designing and implementing scalable front-end solutions using React, TypeScript, and modern tooling (e.g. Redux, Webpack, Jest). * Breaking down complex, ambiguous problems into clean, testable components. * Performance tuningboost UI responsiveness, decrease load times, and streamline data management. * Selecting and integrating third-party tools and libraries wisely, balancing trade-offs effectively.
Trafalgar Talent is recruiting for a progressive, subscription-based tech company thats enhancing how users interact with web platforms through secure, high-performance solutions. As a Senior React Developer, you'll be pivotal in architecting, building, and optimizing advanced web applications using React and TypeScript. You'll take on complex engineering challenges, influence architectural decisions, and contribute directly to the user experience. * Designing and implementing scalable front-end solutions using React, TypeScript, and modern tooling (e.g. Redux, Webpack, Jest). * Breaking down complex, ambiguous problems into clean, testable components. * Performance tuningboost UI responsiveness, decrease load times, and streamline data management. * Selecting and integrating third-party tools and libraries wisely, balancing trade-offs effectively.
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Mid-Level C++ Developer (5+ years of experience) Location:Hybrid - 2-3 days onsite in Hounslow - Rate:£430 per day (Inside IR35) Duration:12 months (Extension highly likely) Are you an experienced C++ Developer looking for your next long-term contract? We are seeking a technically strong and versatileMid-Level C++ Developerto join our client's high-performing team on a travel technology project. Key Responsibilities * Develop and maintain high-performance Back End components using C++11 or newer. * Design dynamic, responsive Front End interfaces with AngularJS/Angular 2+. * Support and enhance existing systems with a focus on performance, stability, and maintainability. * Collaborate with cross-functional teams (Product Owners, QA, DevOps, etc.) to deliver new features. * Refactor Legacy code and actively contribute to reducing technical debt.
Mid-Level C++ Developer (5+ years of experience) Location:Hybrid - 2-3 days onsite in Hounslow - Rate:£430 per day (Inside IR35) Duration:12 months (Extension highly likely) Are you an experienced C++ Developer looking for your next long-term contract? We are seeking a technically strong and versatileMid-Level C++ Developerto join our client's high-performing team on a travel technology project. Key Responsibilities * Develop and maintain high-performance Back End components using C++11 or newer. * Design dynamic, responsive Front End interfaces with AngularJS/Angular 2+. * Support and enhance existing systems with a focus on performance, stability, and maintainability. * Collaborate with cross-functional teams (Product Owners, QA, DevOps, etc.) to deliver new features. * Refactor Legacy code and actively contribute to reducing technical debt.
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Principal Software Engineer
Principal Software Engineer
Rise Technical Recruitment Limited
London
£100000 - £115000.00 per annum + Progression + Training + Pension
London (Office Based) £100,000 - £115,000 + Progression + Training - An excellent opportunity awaits an experienced software engineer with strong Java and Python skills for a hands-on technical leadership position within an innovative ML-driven SaaS firm, in a role offering technical growth, variety and strong development opportunities. The company is a profitable and renowned business delivering a cutting-edge AI-driven platform that helps optimise business processes in heavy industries. In this role, you will take on a hands-on technical leadership position focused on the full stack development and management of the platform. You'll manage solution architecture and APIs, data engineering, and the performance of AWS cloud services. As a technical authority within the team, you will provide technical guidance and mentorship to more junior members of the development te
London (Office Based) £100,000 - £115,000 + Progression + Training - An excellent opportunity awaits an experienced software engineer with strong Java and Python skills for a hands-on technical leadership position within an innovative ML-driven SaaS firm, in a role offering technical growth, variety and strong development opportunities. The company is a profitable and renowned business delivering a cutting-edge AI-driven platform that helps optimise business processes in heavy industries. In this role, you will take on a hands-on technical leadership position focused on the full stack development and management of the platform. You'll manage solution architecture and APIs, data engineering, and the performance of AWS cloud services. As a technical authority within the team, you will provide technical guidance and mentorship to more junior members of the development te
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Are you passionate about turning great design into seamless user experiences? Do you thrive on building interfaces that are as functional as they are beautiful? Our client is looking for aFront-End Developerwho loves working at the intersection of design, technology, and usability. What Youll Do * Build responsive, accessible, and high-quality interfaces with modern frameworks (React, Vue, or Angular). * Bring UX best practices to life, ensuring every interaction feels natural and intuitive. * Contribute to design systems and component libraries that scale across products. * Partner with product managers, designers, and backend engineers to deliver delightful experiences. * Stay ahead of front-end trends, accessibility standards, and UX/UI innovations. What they're Looking For * 4+ yearsof experience in front-end development.
Are you passionate about turning great design into seamless user experiences? Do you thrive on building interfaces that are as functional as they are beautiful? Our client is looking for aFront-End Developerwho loves working at the intersection of design, technology, and usability. What Youll Do * Build responsive, accessible, and high-quality interfaces with modern frameworks (React, Vue, or Angular). * Bring UX best practices to life, ensuring every interaction feels natural and intuitive. * Contribute to design systems and component libraries that scale across products. * Partner with product managers, designers, and backend engineers to deliver delightful experiences. * Stay ahead of front-end trends, accessibility standards, and UX/UI innovations. What they're Looking For * 4+ yearsof experience in front-end development.
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Location: Windsor, UK (Hybrid - 1 day per week in office) Contract: 6 months - Rate: £510 per day - Start Date: 15th September 2025 - About the Role - We are seeking an experienced Salesforce Vlocity Developer to join a major business unit on a contract basis. The successful candidate will be responsible for designing, developing, and implementing tailored Vlocity solutions within the Salesforce platform, with a particular focus on Energy & Utility Cloud. This is a hybrid role requiring one day per week in the Windsor office. Key Responsibilities - Design and develop custom Vlocity solutions including CPQ, CLM, and OmniStudio. - Translate product requirements into high-quality technical specifications. - Build and maintain Vlocity data models (objects, fields, relationships). - Develop custom Apex classes, triggers, and Visualforce pages to extend Salesforce functiona
Location: Windsor, UK (Hybrid - 1 day per week in office) Contract: 6 months - Rate: £510 per day - Start Date: 15th September 2025 - About the Role - We are seeking an experienced Salesforce Vlocity Developer to join a major business unit on a contract basis. The successful candidate will be responsible for designing, developing, and implementing tailored Vlocity solutions within the Salesforce platform, with a particular focus on Energy & Utility Cloud. This is a hybrid role requiring one day per week in the Windsor office. Key Responsibilities - Design and develop custom Vlocity solutions including CPQ, CLM, and OmniStudio. - Translate product requirements into high-quality technical specifications. - Build and maintain Vlocity data models (objects, fields, relationships). - Develop custom Apex classes, triggers, and Visualforce pages to extend Salesforce functiona
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About the Role - We are seeking a Finance Systems Application Support Engineer to join our team on a permanent basis. Acting as the key bridge between our Finance function and IT Systems team, you'll play a central role in supporting, maintaining, and developing finance-related applications-particularly Microsoft Dynamics 365 Finance. This role combines technical expertise with an understanding of finance processes, enabling you to deliver effective first- and second-line support, build reports and workflows, and contribute to wider IT initiatives where finance system expertise is needed. If you're passionate about finance technology and want to drive continuous improvement, this is the opportunity for you. Application Support & Maintenance * Provide technical and functional support for Microsoft Dynamics 365 Finance and related finance systems.
About the Role - We are seeking a Finance Systems Application Support Engineer to join our team on a permanent basis. Acting as the key bridge between our Finance function and IT Systems team, you'll play a central role in supporting, maintaining, and developing finance-related applications-particularly Microsoft Dynamics 365 Finance. This role combines technical expertise with an understanding of finance processes, enabling you to deliver effective first- and second-line support, build reports and workflows, and contribute to wider IT initiatives where finance system expertise is needed. If you're passionate about finance technology and want to drive continuous improvement, this is the opportunity for you. Application Support & Maintenance * Provide technical and functional support for Microsoft Dynamics 365 Finance and related finance systems.
Full Stack Developer
Full Stack Developer
Rise Technical Recruitment Limited
London
£70000.00 - £85000.00 per annum + Progression + Training
London (Office Based) £75,000 - £85,000 + Progression + Training - An excellent opportunity awaits a software engineer with strong Python and Java experience looking to advance their career at an ML-driven SaaS business. This role offers technical growth, variety, and strong development opportunities. The company is a profitable, growing business delivering AI-driven software solutions that optimise business processes in heavy industries. In this role, you'll join a driven and ambitious development team, working across the full stack with Java, Python and Vue.js. You'll manage infrastructure and deployment pipelines, use automation tools, and work with DevOps and cloud technologies (AWS). You will join an autonomous team that values enthusiasm, proactiveness, and training and development. This role is office based, five days per week in the office based in Central Lon
London (Office Based) £75,000 - £85,000 + Progression + Training - An excellent opportunity awaits a software engineer with strong Python and Java experience looking to advance their career at an ML-driven SaaS business. This role offers technical growth, variety, and strong development opportunities. The company is a profitable, growing business delivering AI-driven software solutions that optimise business processes in heavy industries. In this role, you'll join a driven and ambitious development team, working across the full stack with Java, Python and Vue.js. You'll manage infrastructure and deployment pipelines, use automation tools, and work with DevOps and cloud technologies (AWS). You will join an autonomous team that values enthusiasm, proactiveness, and training and development. This role is office based, five days per week in the office based in Central Lon
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Mobile Developer (iOS / Android) Smart Home / IoT Apps - Location: UK/EMEA (Fully Remote) Rate: £300 £400 per day - We are seeking a talented and creative Mobile Developer (iOS / Android) to join our clients fast-growing digital and smart home technology team. You will be working on the design, development, and optimisation of innovative mobile applications that power the next generation of home automation and IoT devices, used by thousands of customers daily. This is a fantastic opportunity to make an impact on high-profile projects, working within a collaborative, forward-thinking environment that blends mobile, IoT, cloud, and real-time communication technologies. Key Responsibilities * Develop, test, and deploy high-quality iOS and Android applications (native or cross-platform). * Collaborate with product managers, designers, and backend engineers to define and d
Mobile Developer (iOS / Android) Smart Home / IoT Apps - Location: UK/EMEA (Fully Remote) Rate: £300 £400 per day - We are seeking a talented and creative Mobile Developer (iOS / Android) to join our clients fast-growing digital and smart home technology team. You will be working on the design, development, and optimisation of innovative mobile applications that power the next generation of home automation and IoT devices, used by thousands of customers daily. This is a fantastic opportunity to make an impact on high-profile projects, working within a collaborative, forward-thinking environment that blends mobile, IoT, cloud, and real-time communication technologies. Key Responsibilities * Develop, test, and deploy high-quality iOS and Android applications (native or cross-platform). * Collaborate with product managers, designers, and backend engineers to define and d
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Lead Performance Test Engineer
Lead Performance Test Engineer
Spectrum It Recruitment Limited
SO50, Eastleigh
£60000 - £65000.00 per annum
Practical skills in C#, Web API testing, Azure and modern test methodologies
Practical skills in C#, Web API testing, Azure and modern test methodologies
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5+ years experience in working with the .NET framework, particularly with ASP.NET Core, React/React Native, C#, Web API Experience developing REST API-driven mobile first web applications
5+ years experience in working with the .NET framework, particularly with ASP.NET Core, React/React Native, C#, Web API Experience developing REST API-driven mobile first web applications
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Proficient in API design, development & production operation
Proficient in API design, development & production operation
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Title: Senior Software Engineer (Driver/API)
Title: Senior Software Engineer (Driver/API)
Exposure to API testing (e.g. RestAssured, Postman)
Exposure to API testing (e.g. RestAssured, Postman)
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Implement schema registries, data contracts, and API-first data governance.
Implement schema registries, data contracts, and API-first data governance.
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Experience with API design standards & integration patterns
Experience with API design standards & integration patterns
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Staff Back End Engineer
Staff Back End Engineer
John Lewis & Partners
SW1V, South West London, SW1V 2QQ
From £75,000 to £92,000 per annum
REST API development and/or consumption.
REST API development and/or consumption.
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Integration & API Testing - proficiency with REST/OData service testing using tools like Postman or SoapUI
Integration & API Testing - proficiency with REST/OData service testing using tools like Postman or SoapUI
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Experience with API design and development for both internal and external use cases
Experience with API design and development for both internal and external use cases
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Senior Full Stack Engineer React .Net Python
Senior Full Stack Engineer React .Net Python
Client Server
South Kensington, SW7
£100000 - £150000 per annum + bonus + benefits
You have REST API experience
You have REST API experience
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Locations
- Fivensgreen
- Haslemere Industrial Estate
- Hillesley
- Holloway
- Kempston
- Pimlico
- Soho
- South Kensington
- Thames View Industrial Park
- Victoria
- Reading
- Central London
- West End
- Bristol
- North West London
- Northampton
- Windsor
- South West London
- Milton Keynes
- Southampton
- London
- Berkshire
- Hampshire
- Avon
- Northamptonshire
- Buckinghamshire
- Oxfordshire
- Gloucestershire
- Surrey
- Warwickshire
- South East
- South West
- Midlands
- East Midlands
- West Midlands